Morphobank

Project 5184: Z. Johanson, P. E. Ahlberg. 2001. Devonian rhizodontids and tristichopterids (Sarcopterygii; Tetrapodomorpha) from East Gondwana. Transactions of the Royal Society of Edinburgh: Earth Sciences. 92 (1):43-74.

Specimen: † Porolepis (unvouchered)
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Abstract

Devonian rhizodontid fishes from East Gondwana include Gooloogongia loomesi Johanson & Ahlberg 1998 from near Canowindra, New South Wales (NSW), Australia and Aztecia mahalae gen. nov., sp. nov. from southern Victoria Land, Antarctica. Gooloogongia loomesi is known from well-preserved cranial and postcranial material, and as such represents the most complete rhizodont known. Newly discovered elements (braincase, pelvic girdle) are described for the first time. Aztecia mahalae gen. nov., sp. nov. is based on shoulder girdle material formerly assigned to Notorhizodon Young et al. 1992, which, based on skull and lower jaw morphology, is a member of the Tristichopteridae. The presence of several plesiomorphic characters suggests that Gooloogongia occupies a basal phylogenetic position within the Rhizodontida, while Aztecia n. gen. possesses a more derived shoulder girdle. We argue that the Rhizodontida evolved on the Gondwanan landmass. Notorhizodon occupies a relatively derived position within the Tristichopteridae, but is contemporary with the earliest and phylogenetically most basal Laurussian members of the group. This shows that the tristichopterids achieved a worldwide distribution considerably earlier than previously thought.

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Article DOI: 10.1017/S0263593300000043

Project DOI: 10.7934/P5184, http://dx.doi.org/10.7934/P5184

This project contains	Matrices
9 Media 1 Matrix 1 Document 30 Taxa 9 Specimens 99 Characters Total size of project's media files: 36.11M Download Project SDD File	Total scored cells: 2053 Total media associated with cells: 0 Total labels associated with cell media: 0
	Characters
	Total characters: 99 Total characters with associated media: 0 Total characters with media with labels: 0 Total character states: 214 Total character states with associated media: 0 Total character states with media with labels:0 Total unordered/ordered characters:99/0

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MorphoBank Project 5184

Creation Date:
31 March 2024
Publication Date:
01 April 2024

Authors' Institutions

Natural History Museum, London

Australian Museum

Members

Shreya Jariwala
Project Administrator

2053
(2053, 0, 0)

Taxonomic Overview for Matrix 'M29776' (30 Taxa)

taxon	unscored cells	scored cells	no cell support	NPA cells	"-" cells	cell images	labels on cell images	member access
[1] † Porolepis Taxon name last Modified on 03/31/24	16	83	83	0	0	0	0	1
[2] † Powichthys Taxon name last Modified on 03/31/24	29	70	70	0	0	0	0	1
[3] † Youngolepis Taxon name last Modified on 03/31/24	23	76	76	0	0	0	0	1
[4] † Diabolepis Taxon name last Modified on 03/31/24	55	44	44	0	0	0	0	1
[5] † Dipterus Taxon name last Modified on 03/31/24	33	66	66	0	0	0	0	1
[6] † Cabonnichthys Taxon name last Modified on 03/31/24	19	80	80	0	0	0	0	1
[7] † Mandageria Taxon name last Modified on 03/31/24	20	79	79	0	0	0	0	1
[8] † Eusthenodon Taxon name last Modified on 03/31/24	33	66	66	0	0	0	0	1
[9] † Eusthenopteron Taxon name last Modified on 03/31/24	4	95	95	0	0	0	0	1
[10] † Platycephalichthys Taxon name last Modified on 03/31/24	38	61	61	0	0	0	0	1
[11] † Jarvikina Taxon name last Modified on 03/31/24	31	68	68	0	0	0	0	1
[12] † Tristichopterus Taxon name last Modified on 03/31/24	44	55	55	0	0	0	0	1
[13] † Koharalepis Taxon name last Modified on 03/31/24	53	46	46	0	0	0	0	1
[14] † Canowindra Taxon name last Modified on 03/31/24	59	40	40	0	0	0	0	1
[15] † Beelarongia Taxon name last Modified on 03/31/24	58	41	41	0	0	0	0	1
[16] † Gyroptychius Taxon name last Modified on 03/31/24	15	84	84	0	0	0	0	1
[17] † Medoevia Taxon name last Modified on 03/31/24	14	85	85	0	0	0	0	1
[18] † Gogonasus Taxon name last Modified on 03/31/24	16	83	83	0	0	0	0	1
[19] † Osteolepis Taxon name last Modified on 03/31/24	29	70	70	0	0	0	0	1
[20] † Megalichthys Taxon name last Modified on 03/31/24	9	90	90	0	0	0	0	1
[21] † Ectosteorhachis Taxon name last Modified on 03/31/24	33	66	66	0	0	0	0	1
[22] † Cladarosymblema Taxon name last Modified on 03/31/24	14	85	85	0	0	0	0	1
[23] † Barameda Taxon name last Modified on 03/31/24	44	55	55	0	0	0	0	1
[24] † Gooloogongia Taxon name last Modified on 03/31/24	44	55	55	0	0	0	0	1
[25] † Panderichthys Taxon name last Modified on 03/31/24	12	87	87	0	0	0	0	1
[26] † Acanthostega Taxon name last Modified on 03/31/24	20	79	79	0	0	0	0	1
[27] † Ichthyostega Taxon name last Modified on 03/31/24	22	77	77	0	0	0	0	1
[28] † Kenichthys Taxon name last Modified on 03/31/24	56	43	43	0	0	0	0	1
[29] † Glyptolepis Taxon name last Modified on 03/31/24	6	93	93	0	0	0	0	1
[30] † Notorhizodon Taxon name last Modified on 03/31/24	68	31	31	0	0	0	0	1